【#GRE留學(xué)外語(yǔ)考試# #GRE數(shù)學(xué)重要知識(shí)點(diǎn)：Subtracting Monomials#】向著順利通過(guò)考試的目標(biāo)，邁步向前，必然會(huì)成功拿到證書(shū)。以下是“GRE數(shù)學(xué)重要知識(shí)點(diǎn)：Subtracting Monomials”，歡迎閱讀參考！更多相關(guān)訊息請(qǐng)關(guān)注©無(wú)憂考網(wǎng)！

　　To subtract a monomial from another of the same variables just subtract the coefficients. Only two like monomials can be subtracted from each other.

　　Example:

　　By subtracting 3x from 4x, we get (4-3)x=x.

　　By subtracting 3xy from 2xy, we get (2-3)xy=-xy.

　　By subtracting bx from ax, we get ax-bx=(a-b)x.

　　Remember:

　　Monomials can be subtracted only if they have the same variables with identical powers.